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Zebar

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file setup by Zebar has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer.
Publisher:
Zebar  (signed and verified)

MD5:
1d8c313fdab24676d1093de15e7479dd

SHA-1:
daa5add010464aca6e3a645bdf6b171686b133df

SHA-256:
1102e2ea82d1bced5bd50822802a887993d8d1b9f9a7b4fb8539ba3c3ee38dbb

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
11/5/2024 5:45:33 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.15.22

File size:
464.9 KB (476,008 bytes)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\ProgramData\55a7c981-e341-484e-8c48-a127e0e81231\setup

Digital Signature
Signed by:
Zebar

Authority:
VeriSign, Inc.

Valid from:
3/9/2015 9:00:00 PM

Valid to:
4/8/2016 8:59:59 PM

Subject:
CN=Zebar, O=Zebar, L=Santa Monica, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
171B17126D099A3420D3D8E3364A53F2

File PE Metadata
Compilation timestamp:
12/5/2009 7:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

Entry address:
0x30CB

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 38, 6F, 44, 00, E8, F1, 2B, 00, 00, A3, 84, 6E, 44, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, 9C, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 2E, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, F0, 46, 00, 50, 57, E8, 92, 28, 00, 00...
 
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Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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